Alternative approach to the synthesis of optically active β-keto sulfoxides by furylhydroperoxides enantioselective oxidations
作者:Alessandra Lattanzi、Francesco Bonadies、Annamaria Schiavo、Arrigo Scettri
DOI:10.1016/s0957-4166(98)00264-x
日期:1998.8
Enantiomerically enriched β-keto sulfoxides are obtainable by an alternative method to the classical reaction of the enantiomerically pure α-sulfinyl anion with esters or by Andersen's synthesis, through Sharpless modified kinetic resolution of racemic β-keto sulfoxides. High e.e.s are achieved by combining asymmetric oxidation and kinetic resolution using furylhydroperoxides as oxidants.
对映体富集的β-酮亚砜可通过对映体纯的α-亚磺酰基阴离子与酯的经典反应的替代方法或通过Andersen的合成,通过外消旋的β-酮亚砜的Sharpless改进的动力学拆分来获得。通过使用呋喃基氢过氧化物作为氧化剂,将不对称氧化和动力学拆分相结合,可以实现较高的ee。